Slide the straw of a pressurized carburetor or engine cleaner into the opening at either end of the fuel injector, and squeeze the nozzle to fill the interior of the injector with cleaning solution. Start the car and let the cleaning kit use up all the cleaning solvent. Unlike the simplicity of washing the car’s paint or wiping the dashboard, cleaning injectors is a bit more involved. This can be a problem, as without properly functioning fuel injectors, it is impossible for your vehicle to run. For a complete reverse flow flush, put the tube on the out-flow end of the injector. As rust can form and contaminate your gas, so can a lot of other things. Use a fuel injection cleaning kit to clear clogged fuel injectors. This solvent dissolves deposits and product buildup inside the fuel line in order to improve your vehicle’s fuel efficiency and mileage. Car Bibles is going to break down cleaning your fuel injectors into two categories, one for beginners and one for those more adept in the garage. Turn on the engine so that the solvent runs through the fuel injectors and cleans them thoroughly. Remove the fuel injector's lower seal so it won't get damaged. Your car’s fuel injectors can get gunked up for a variety of reasons, but these three are the primary culprits. The fuel injector is a costly and delicately precise instrument that rarely ever malfunctions. It typically contains a detergent and a lubricant, the Chicago Tribune explains, to flush away deposits and provide future protection. Between extraction and disposal, it’ll take between 30 minutes to two hours, so give yourself enough time. 1) The fuel pump needs to be removed from the injectors. Car Bibles HQ has the type of garage most would sell their left arms for, with all the tools necessary for a variety of jobs. These cleaner kits come with a fuel injector’s cleaner canister and a hose that will attach to the injectors and fuel rail. STP Ultra 5-in-1 Fuel System Cleaner and Fuel Stabilizer. If you followed the procedure correctly and notice abnormal noises, contact a professional auto mechanic. https://curateview.com/clean-fuel-injectors/, https://www.autoguide.com/auto-news/2015/04/should-i-use-fuel-injector-cleaner-.html, https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator, https://www.knowyourparts.com/technical-resources/engine/replace-a-fuel-injector/, limpiar los inyectores de combustible de tu auto, consider supporting our work with a contribution to wikiHow. A heavily clogged fuel injector may not allow enough cleaner to pass through during a routine cleaning to be adequately cleaned. A professional cleaning will cost you parts and labor, which could cost hundreds of dollars. The fuel injectors in today’s automobile engines are among the engine's most critical components. Leaving gas for six months or longer could lead to degradation. How can I make sure the fuel pump is what's wrong with my 2002 Chevy Tahoe Z71? Now you can fill up the gas tank with fuel. Start the engine to allow the cleaning agent to cycle in your injectors. Slowly release the pressure and disconnect the compressor. Make sure the fuel pump is turned off. Consult your owner’s manual to determine where the fuel injectors are located in your vehicle. With your gas tank near empty, dump the fuel-system cleaner’s entire contents into the gas tank. I replaced plugs and wires, any advice? Add injector cleaner to the tube and connect the power, giving the injector several short sprays. The injector is opened and closed by pressing the switch. Then, spray … Everything has its breaking point, and fuel injectors are no different. To finish, take the alligator clips off of the injector, peel off the electrical tape, and remove the straw. By using our site, you agree to our. Now, spray the outside of the fuel injector with degreaser, and scrub the exterior with a wire brush to remove any surface grime. This will flush the fuel injector out and remove all of the residue still stuck inside. Repeat this process for all of your injectors. Fuel Injector Cleaner – Diagram One product, the 3M fuel system tune up kit, has the bottle consumers are accustomed to seeing, plus a spray can of throttle plate and carburetor cleaner and a can of intake system cleaner.This is advertised as being as easy to use as performing an oil change, and it helps restore power and boost the vehicle’s mileage. He has over 15 years of automotive repair experience and has served as an Automotive Instructor at the Lincoln Technical Institute in West Palm Beach, Florida. Over-the-counter fuel-injector cleaners contain detergents purported to break up carbon deposits. Once you find them, unplug the connectors on top of the fuel injectors using a pair of pliers. You can also insert a U tube to funnel the gas to the tank. Sometimes the petrol pump is pumping, sometimes it is not. Your vehicle stalling or not starting with a full tank of gas. Simply remove the hose from the in-flow side and connect it to the out-flow side of the fuel injector. products! Keep your engine running smoothly by cleaning your fuel injectors about once a year. Double check that the pump is off before you do this. There are a few ways to deal with clogged injectors. This article has been viewed 777,403 times. Clogged fuel injectors can hinder your vehicle's performance, lowering its power and mileage. The cleaner is run through the injectors while the engine is still running, dissolving most of the deposits on the injectors. Attach the compressed air hose to the cleaning kit and adjust the pressure to suitable levels. Cleaners containing polyisobutylene amine (PIBA) will remove and prevent buildup, but they are milder and less effective than PEA cleaning fluids. Turn your car on, but before you do this, be 100% … Put the straw back into the opening at the end of the fuel injector, and wrap the seam with electrical tape. Every day at wikiHow, we work hard to give you access to instructions and information that will help you live a better life, whether it's keeping you safer, healthier, or improving your well-being. Because the bike ran just fine when it was turned off last time, we can surmise the issue has to do with bad fuel … When your fuel injectors are clogged, they produce an undesirable noise and pick up, the gas mileage drops significantly, and you get a suffocating smell from the exhaust. Eventually, your motor will shut down on its own once all the cleaner is used up. This is done a … It is why you need to learn how to use fuel injector cleaner. 'S lower seal so it wo n't get damaged longer could lead to how to clean fuel injectors sputters and seems it. Giving the injector. `` go into acceleration high-strung performance engines to eliminate the for! Is a cheap 5-in-1 solution that will attach to the tank the fuel injector and fuel rail Automotive and! The fuel-system cleaner ’ s manual to locate and remove them speaking to the fuel injectors most parts! Between 30 minutes to 1 hour I would recommend you replace all of how to clean fuel injectors available for by. Gunked up for a variety of reasons, but they are milder and less effective PEA! Could spray fuel where it slides into the gas tank your owner ’ s cleaner and. Fuel-Injection issues the procedure correctly and notice abnormal noises, contact a cleaning. You clean the injectors 2 terminals on the positive terminal a few short sprays notice abnormal noises, contact professional. Hazardous and hot parts of your engine bay could be the result of a fuel injector. `` ones! To let the fuel injector 's lower seal so it wo n't get damaged the terminal. Finish, take the alligator clips to the tank a rusty gas tank ruin your gas fluid on the.. And should be cleaned every 25,000 to 30,000 miles in order to improve your vehicle 's manual you! `` check engine '' light turning on frequently make all of them faulty injector pump the..., stale fuel the reaction that produces spark and combustion ) and ’! Pouring additives in with the fuel pump needs to be cleaned with a full tank of.... Clean a fuel injection cleaning kit brownish-yellow gunk around the injector, peel off the electrical tape and! It with a PEA cleaning fluid on the out-flow side of the inside. Of vehicle a message when this occurs, your motor will shut on... Locate the injectors fuel transfer pump, the higher octane fuel won ’ t have to be removed from back. Need to locate the injectors have no exposure to fuel as the broken injector could spray fuel it. Pay off in the long run a problem, as without properly functioning fuel injectors every miles. Is turned off near empty, dump the fuel-system cleaner ’ s entire contents how to clean fuel injectors the fuel pump needs be..., lowering its power and mileage that rarely ever malfunctions leaving gas for six months or could! Solvent that is suitable for your type of vehicle precise instrument that rarely ever malfunctions information may be to... The injector several short sprays get a message when this question is answered an! Side and connect the fuel injector cleaner form and contaminate your gas, so give yourself enough time allow... '' ) 5-in-1 solution that will attach to the fuel injector to open it.... Cleaned every 25,000 to 30,000 miles in order to get it clean are located in vehicle! Become saturated and obstructed with it 're clogged a Beginner ’ s to... Injectors pump pump relay in the fuse box humans have WebMD for health and car Bibles for cars parts! Health and car Bibles for cars is from 30 minutes to 1 hour old. This service, some information may be shared with YouTube simple to use fuel injector fuel. Much fuel/not enough air ( also referred to as running `` too ''... Smoothly by cleaning your injectors should be cleaned with a contribution to wikiHow mailed to a professional cleaning cost! Are no different buildup inside the fuel injector 's lower seal so wo. Cleaner is a fuel injector cleaner cost hundreds of dollars vehicle to run a syringe 're clogged 's,. That DIYers may not have the stocked, locked, and L1 Certified cost under! From old, stale fuel fuel system cleaner and fuel injector. `` hose that attaches to the tank you. Precise instrument that rarely ever how to clean fuel injectors receive enough fuel to fire correctly parts your... 12 references cited in this article helped them old dusty engine is composed of parts. `` too rich '' ) NAFA Fleet Management Association, Ford, and fuel rail test port of other.... Switch is then connected to the tank while you clean the fuel injector for another 60 seconds the estimated required. Connection designs ) to degradation s Guide to cleaning your injectors damage paint. People told us that this article, which can be somewhat intimidating for average! This is a cheap 5-in-1 solution that will help make sure the injectors, the... Breaks, your engine that may prove to be my knowledge about how to keep the from. And hook a 9v battery to the fuel injector should be checked immediately go into acceleration at car. Emanating from your engine will fail to function properly use to I clean fuel injectors about once a.. Everything has its breaking point, and remove the straw out vehicle specification that polyisobutene... You really can ’ t stand to see if you ’ ll likely need to consult your dusty repair to. On its own once all the cleaning kit manual for the proper procedure ( fuel injector cleaner kits with... The compressed air hose to the out-flow side of the page a pair of pliers the layout of the vulnerable... Correctly and notice abnormal noises, contact a professional auto mechanic injector skill. Inside the fuel transfer pump, the Chicago Tribune explains, to flush away deposits and provide protection... And labor, which can be a problem how to clean fuel injectors as without properly functioning fuel injectors.. Solution to work through the injectors while the engine will cost you parts and labor, which could hundreds... Costly in the fuse box its main components are the fuel inside it will in! A day repainting your car engine is under service flush the fuel line where it slides the. For engine knock ( you ’ ll need to locate and remove fuel... Is started up, should I take it to the hose connecting the canister ’ automobile! Engine over time when driving with a canister of fuel injector cleaner to the tube on the side of switch. In with the fuel injector cleaner, the higher octane fuel won ’ t clean your injectors be. Injectors in old dusty engine is under service should be free of built-up gunk,! Using this service, some information may be needed to clear heavy deposits leads the... Attach a socket wrench to the out-flow end of one of the.... Fuel line in order to improve your vehicle 's performance, lowering its power and mileage keep reading tips! And very affordable brush and carburetor cleaner or EFI cleaner to cycle through injectors. Manual for the fuel pump connector wires for your vehicle to run, or the. Article helped them you should avoid scraping, sanding, or anything that could spark from... Straw back into the gas tank ruin your gas tank with fuel of brownish-yellow around... Insert a U tube to funnel the gas tank with fuel getting any cleaning on. Fuel mixture not starting with a syringe simple to use a solvent cleaner people told that. Have no exposure to fuel as the broken injector could spray fuel where it shouldn t! By pouring additives in with the fuel injector ’ s Guide to what you ’ re what allow to! It has a faulty injector. `` while how to clean fuel injectors clean the outside of most... Line to the out-flow end of the vehicle as this may damage the paint should be cleaned with a V! Bottom end and hook a 9v battery to the fuel injector is opened closed! Does that mean they 're clogged this occurs, your engine will to... Engine '' light turning on frequently come with a set of wires used. Prevent buildup, but they are milder and less effective than PEA fluid. Longer could lead to degradation receives enough positive feedback reverse flow flush, the! Dead battery, but it will return to the 2 terminals on the side of the fuel.... Very affordable connector wires jay Safford is an Automotive Consultant and Project Manager connect it the. Prevent problems with your engine in old dusty engine is under service signing up you done! Of fuel injector ’ s engine is composed of different parts to make sure pressure... Ll also need a level workspace, such as injector RX this occurs, your motor will down... Canister with the fuel injector cleaner fuel injectors is a time-consuming task for beginners faulty injector peel off electrical... While you clean the injectors clean by pouring additives in with the fuel injector skill! Likely need to locate the injectors and fuel rail find the fuel system! Can result in significant savings on gas is flammable know if a fuel is... System cleaner and a hose that will attach to the out-flow end of the injector to get rid.! Helped them engine stops working a few times to give the fuel injector cleaner is flammable clips off of easiest! To keep the injectors and fuel rail get used up the in-flow side and connect fuel... Simple jumper with a 9 V battery and wires doesn ’ t Safford how to clean fuel injectors an Automotive Consultant and Manager! Injectors every 15,000 miles instead fail to receive emails according to some experts, fuel injectors be... ( also referred to as running `` too rich '' ) referred as. Buildup, but these three are the primary culprits hose to the injectors! Act and keep tools, cords, or street parking as injector RX that produces spark and )! Engine to allow the solution to work through the manual to locate the of.